Compare 1861 vs 1862
| Property | 1861 | 1862 | 
|---|---|---|
| Type | prime | composite number | 
| Unique factors | 1 | 3 | 
| Total factors | 1 | 4 | 
| Prime factorization | 18611 | 21 × 72 × 191 | 
| Prime factorization | 1861 | 2 × 7 × 7 × 19 | 
| Divisors count | 2 | 12 | 
| Divisors | 1, 1861 | 1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862 | 
| Number of properties | 10 | 0 | 
| Centered square primes | 15th | |
| Good primes | 58th | |
| Harmonic primes | 103rd | |
| Isolated primes | 173rd | |
| Long primes | 112th | |
| Primes | 284th | |
| Pythagorean primes | 137th | |
| Sexy primes (1st member) | 120th | |
| Sexy prime quadrupletss (1st member) | 12th | |
| Sexy prime triplets (1st member) | 47th | |
| Roman numberals | MDCCCLXI | MDCCCLXII | 
| Base 2 | 111010001012 | 111010001102 | 
| Base 3 | 21122213 | 21122223 | 
| Base 4 | 1310114 | 1310124 | 
| Base 5 | 244215 | 244225 | 
| Base 6 | 123416 | 123426 | 
| Base 7 | 52667 | 53007 | 
| Base 8 | 35058 | 35068 | 
| Base 9 | 24879 | 24889 | 
| Base 10 | 186110 | 186210 | 
| Base 11 | 144211 | 144311 | 
| Base 12 | 10b112 | 10b212 | 
| Base 13 | b0213 | b0313 | 
| Base 14 | 96d14 | 97014 | 
| Base 15 | 84115 | 84215 | 
| Base 16 | 74516 | 74616 |